diff --git a/NonStandardLuaLibs.md b/NonStandardLuaLibs.md
index 7253f32..93cbb25 100644
--- a/NonStandardLuaLibs.md
+++ b/NonStandardLuaLibs.md
@@ -55,7 +55,7 @@ For the most part these should be *functionally* equivalent to the standard Lua
 - `io.open` does *not* support the `+` modes, i.e. it only supports `r`, `w`, `a`, `rb`, `wb` and `ab`. Binary mode in this implementation determines whether to use UTF-8 aware string functions or not, when reading a number of chars (e.g. via `f:read(42)`).
 - `io.stdin` reads data using `term.read`.
 - `io.stdout` writes using `term.write`.
-- `io.stderr` equals `io.stdout`, it is just an alias.
+- `io.stderr` also writes using `term.write`, but tries to do so in a red color, if supported by the primary GPU and Screen.
 - `io.read` does *not* support the `*n` format at this point.
 
 Operating System Facilities